1151055051165 has 24 divisors (see below), whose sum is σ = 2014916176728. Its totient is φ = 607817846400.

The previous prime is 1151055051121. The next prime is 1151055051187. The reversal of 1151055051165 is 5611505501511.

1151055051165 is a `hidden beast` number, since 1 + 1 + 51 + 0 + 550 + 51 + 1 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 659959639641 + 491095411524 = 812379^2 + 700782^2 .

It is not a de Polignac number, because 1151055051165 - 2⁷ = 1151055051037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126624174 + ... + 126633263.

It is an arithmetic number, because the mean of its divisors is an integer number (83954840697).

Almost surely, 2^{1151055051165} is an apocalyptic number.

1151055051165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151055051165 is a deficient number, since it is larger than the sum of its proper divisors (863861125563).

1151055051165 is a wasteful number, since it uses less digits than its factorization.

1151055051165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253257549 (or 253257546 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 1151055051165 in words is "one trillion, one hundred fifty-one billion, fifty-five million, fifty-one thousand, one hundred sixty-five".